US4962255AExpiredUtility
Catalysts and process for the production of hydrocarbons and substitution of hydrocarbons
Est. expiryOct 2, 2004(expired)· nominal 20-yr term from priority
C07C 2529/86C07C 2/864C07C 2521/12C07C 2/66
86
PatentIndex Score
31
Cited by
7
References
7
Claims
Abstract
A method of selective beta-alkylation of aromatic substrates such as naphthalene or a derivative thereof, comprising reacting the substrate with an alcohol or olefin alkylating agent in the presence of a catalyst selected from the group consisting of a crystallized borosilicate glass zeolite and a crystalline alumina-silica catalyst, said catalyst being at least 86% beta selective with respect to the alkylation of naphthalene by the alkylating agent.
Claims
exact text as granted — not AI-modifiedWe claim:
1. A method of preferred beta-position alkylation of a substrate comprising naphthalene or a derivative thereof, which comprises reacting the substrate with a C 1 -C 3 -alkanol or C 2 -C 3 -olefin alkylating agent while contacting the substrate and alkylating agent with a catalyst selected from the group consisting of a crystallized borosilicate glass zeolite alkylation catalyst and a crystalline silica-alumina catalyst at 400°-500°, said catalyst being at least 86% beta selective with respect to the alkylation of naphthalene by said alkylating agent at 400°-500° C.
2. The method of claim 1, wherein said crystallized borosilicate glass zeolite has been crystallized from a reaction system comprising a source of finely powdered borosilicate glass and a template for a reaction time of less than 24 hours.
3. The method of claim 2, wherein the template is a tetraalkylammonium hydroxide, chloride, iodide, or bromide.
4. The method of claim 3, wherein the template is tetraalkylammonium hydroxide.
5. A method according to claim 1, wherein said catalyst is a ZSM-5 catalyst.
6. A method according to claim 1, wherein the alkylating agent is a C 1 -C 3 alkanol.
7. The process of claim 1, wherein said catalytic conversion occurs in the presence of mesitylene.Cited by (0)
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